Information fusion technology-based fingerprint identification method and device

A fingerprint recognition and technology technology, applied in the direction of character and pattern recognition, instruments, computer parts, etc., can solve problems such as the increase in the amount of calculation, the increase in the number of focal elements, and the prevention of the widespread application of the D-S evidence theory.

Inactive Publication Date: 2012-12-05
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0012] (2) It is easy to cause a sharp increase in the number of focal elements, and the calculation amount increases exponentially, which is one of the difficulties in the practical application of D-S evidence theory;
[0013] (3) Combination rules cannot handle conflicts, and cannot distinguish the size of the subset of evidence to achieve focus according to different weights
[0015] The second aspect is the main reason that hinders the wider application of D-S evidence theory in the field of information fusion
[0023] To sum up, relying on the existing improved D-S evidence theory for fingerprint identification based on information fusion technology still has various problems in terms of accuracy and reliability. its improvement

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  • Information fusion technology-based fingerprint identification method and device
  • Information fusion technology-based fingerprint identification method and device
  • Information fusion technology-based fingerprint identification method and device

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Embodiment Construction

[0100] An information fusion technology proposed in the embodiment of the present invention uses two different fingerprint matching algorithms for fingerprint identification. The schematic diagram of the fingerprint identification stage is as follows: image 3 As shown: in the feature extraction stage, two types of fingerprint features are extracted, which are respectively called the first type of fingerprint features and the second type of fingerprint features; in the fingerprint feature matching stage, the fingerprint feature matching algorithm A 301 processes the first type of fingerprint features, the fingerprint features The matching algorithm B 302 processes the second type of fingerprint features, and the processing results of the two are screened by the information screening module 303 in the decision layer fusion stage, and useful information is selected, and then processed by the improved D_S evidence theory 304 proposed by the present invention. , and finally the rec...

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Abstract

The invention provides an information fusion technology-based fingerprint identification method, which comprises the following steps of: A, for the same on-site fingerprint image, extracting N types of different fingerprint characteristics, wherein N is a natural number more than or equal to 2; B, adopting N fingerprint characteristic matching algorithms, and matching the on-site fingerprint image and library fingerprint images to obtain N matching fraction sequences; and C, performing information fusion on the N matching fraction sequences by adopting the improved D_S evidence theory to obtain a fingerprint identification result. The invention also provides an information fusion technology-based fingerprint identification device. The method and the device can further improve the accuracyand reliability of fingerprint identification compared with the prior art.

Description

technical field [0001] The present invention relates to the technical field of pattern recognition and information processing, in particular to fingerprint recognition technology, and in particular to a fingerprint recognition method and device based on information fusion technology. Background technique [0002] With the development of computer image processing and pattern recognition technology, biometric technology is getting more and more attention and application. Due to the uniqueness and stability, easy sampling and high reliability of biometric features such as fingerprint, iris, palmprint, face, voiceprint, etc., they have become one of the most effective means of personal identity authentication. Among them, fingerprint recognition technology It is also a hot spot of biometric technology, with high practicability and feasibility, and its identification results have legal effect. [0003] figure 1 Shown are the basic steps included in the fingerprint identificatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
Inventor 景晓军李剑峰张洁刘馨靖张博
Owner BEIJING UNIV OF POSTS & TELECOMM
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